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1.
Pharmacol Res ; 205: 107223, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38797359

RESUMO

Sepsis is a life-threatening syndrome caused by a dysregulated immune response. A large number of adaptor proteins have been found to play a pivotal role in sepsis via protein-protein interactions, thus participating in inflammatory cascades, leading to the generation of numerous inflammatory cytokines, as well as oxidative stress and regulated cell death. Although available strategies for the diagnosis and management of sepsis have improved, effective and specific treatments are lacking. This review focuses on the emerging role of adaptor proteins in regulating the innate immunity of sepsis and evaluates the potential value of adaptor protein-associated therapeutic strategy for sepsis.


Assuntos
Proteínas Adaptadoras de Transdução de Sinal , Imunidade Inata , Sepse , Humanos , Sepse/imunologia , Sepse/metabolismo , Animais , Proteínas Adaptadoras de Transdução de Sinal/metabolismo , Proteínas Adaptadoras de Transdução de Sinal/imunologia , Transdução de Sinais
2.
Zhongguo Yi Liao Qi Xie Za Zhi ; 48(1): 44-50, 2024 Jan 30.
Artigo em Zh | MEDLINE | ID: mdl-38384216

RESUMO

This study summarizes the application of automatic recognition technologies for patient-ventilator asynchrony (PVA) during mechanical ventilation. In the early stages, the method of setting rules and thresholds relied on manual interpretation of ventilator parameters and waveforms. While these methods were intuitive and easy to operate, they were relatively sensitive in threshold setting and rule selection and could not adapt well to minor changes in patient status. Subsequently, machine learning and deep learning technologies began to emerge and develop. These technologies automatically extract and learn data characteristics through algorithms, making PVA detection more robust and universal. Among them, logistic regression, support vector machines, random forest, hidden Markov models, convolutional autoencoders, long short-term memory networks, one-dimensional convolutional neural networks, etc., have all been successfully used for PVA recognition. Despite the significant advancements in feature extraction through deep learning methods, their demand for labelled data is high, potentially consuming significant medical resources. Therefore, the combination of reinforcement learning and self-supervised learning may be a viable solution. In addition, most algorithm validations are based on a single dataset, so the need for cross-dataset validation in the future will be an important and challenging direction for development.


Assuntos
Assincronia Paciente-Ventilador , Respiração Artificial , Humanos , Ventiladores Mecânicos , Algoritmos , Redes Neurais de Computação
3.
Clin Immunol ; 246: 109210, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36528252

RESUMO

Uveitis with complex pathogenesis is a kind of eye emergency involving refractory and blinding inflammation. Dysregulation of TANK binding kinase 1 (TBK1), which plays an important role in innate immunity, often leads to inflammatory diseases in various organs. However, the role of TBK1 in uveitis remains elusive. In this study, we identified that the mRNA expression level of TBK1 and its phosphorylation level were significantly increased in peripheral blood mononuclear cells (PBMCs) of patients with uveitis. Consistent with this, the expression of Tbk1 was elevated in the ocular tissues of uveitis rats and primary peritoneal macrophages while its phosphorylation levels, which present activation forms, were upregulated as well, accompanied by an increase in the level of nuclear factor-κB (NF-κB) and proinflammatory cytokines. In addition, inhibition of TBK1 may effectively reduce the inflammatory response of uveitis rats by blocking NF-κB entry into the nucleus and impeding the initiation of NLRP3 inflammasome- and caspase-1-mediated pyroptosis pathways.


Assuntos
NF-kappa B , Uveíte , Animais , Ratos , Inflamassomos/metabolismo , Inflamação/metabolismo , Leucócitos Mononucleares/metabolismo , NF-kappa B/metabolismo , Transdução de Sinais , Uveíte/genética
5.
BMC Med ; 20(1): 444, 2022 11 15.
Artigo em Inglês | MEDLINE | ID: mdl-36380329

RESUMO

BACKGROUND: There is growing evidence that patients recovering after a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection may have a variety of acute sequelae including newly diagnosed diabetes. However, the risk of diabetes in the post-acute phase is unclear. To solve this question, we aimed to determine if there was any association between status post-coronavirus disease (COVID-19) infection and a new diagnosis of diabetes. METHODS: We performed a systematic review and meta-analysis of cohort studies assessing new-onset diabetes after COVID-19. PubMed, Embase, Web of Science, and Cochrane databases were all searched from inception to June 10, 2022. Three evaluators independently extracted individual study data and assessed the risk of bias. Random-effects models estimated the pooled incidence and relative risk (RR) of diabetes compared to non-COVID-19 after COVID-19. RESULTS: Nine studies with nearly 40 million participants were included. Overall, the incidence of diabetes after COVID-19 was 15.53 (7.91-25.64) per 1000 person-years, and the relative risk of diabetes after COVID-19 infection was elevated (RR 1.62 [1.45-1.80]). The relative risk of type 1 diabetes was RR=1.48 (1.26-1.75) and type 2 diabetes was RR=1.70 (1.32-2.19), compared to non-COVID-19 patients. At all ages, there was a statistically significant positive association between infection with COVID-19 and the risk of diabetes: <18 years: RR=1.72 (1.19-2.49), ≥18 years: RR=1.63 (1.26-2.11), and >65 years: RR=1.68 (1.22-2.30). The relative risk of diabetes in different gender groups was about 2 (males: RR=2.08 [1.27-3.40]; females: RR=1.99 [1.47-2.80]). The risk of diabetes increased 1.17-fold (1.02-1.34) after COVID-19 infection compared to patients with general upper respiratory tract infections. Patients with severe COVID-19 were at higher risk (RR=1.67 [1.25-2.23]) of diabetes after COVID-19. The risk (RR=1.95 [1.85-2.06]) of diabetes was highest in the first 3 months after COVID-19. These results remained after taking confounding factors into account. CONCLUSIONS: After COVID-19, patients of all ages and genders had an elevated incidence and relative risk for a new diagnosis of diabetes. Particular attention should be paid during the first 3 months of follow-up after COVID-19 for new-onset diabetes.


Assuntos
COVID-19 , Diabetes Mellitus Tipo 2 , Infecções Respiratórias , Humanos , Feminino , Masculino , Adulto Jovem , Adulto , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/diagnóstico , Diabetes Mellitus Tipo 2/epidemiologia , SARS-CoV-2 , COVID-19/diagnóstico , COVID-19/epidemiologia , Estudos de Coortes
6.
Anim Biotechnol ; 33(4): 612-628, 2022 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32876516

RESUMO

Rumen development is critical for the development of early lambs. This work aims to evaluate the effects of abrupt weaning at day 21 on rumen fermentation, histomorphological traits and the ruminal microbiota compared with continuous suckling. Twelve pairs of artificially reared full-sib neonatal male Hu lambs were allocated to two groups, one of which was weaned at day 21 (EW group) and the other which was not weaned (CON group). At day 26 and day 49, six lambs from each group were randomly selected and sacrificed to collect ruminal contents and rumen tissue samples. Results showed that weaning influenced the fermentation parameters in the rumen, and altered the microbial community composition on day 49 (p < 0.05). Several genera were associated with rumen fermentation parameters (p < 0.05). Volatile fatty acid (VFA) concentration is the key parameter impacting microbiota composition. Weaning influenced the expression of genes associated with VFA metabolism and regulation of cell proliferation (p < 0.05). In conclusion, weaning significantly influenced the morphological and functional development of the rumen, and bacterial community composition. The microbial community composition was strongly associated with rumen weight and fermentation profiles, but not with morphological development.


Assuntos
Microbiota , Rúmen , Ração Animal/análise , Animais , Dieta/veterinária , Ácidos Graxos Voláteis , Masculino , Rúmen/metabolismo , Ovinos , Carneiro Doméstico , Desmame
7.
J Cell Physiol ; 236(1): 68-78, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32572956

RESUMO

Angiotensinogen (AGT) is the unique precursor of all angiotensin peptides. Many of the basic understandings of AGT in cardiovascular diseases have come from research efforts to define its effects on blood pressure regulation. The development of novel techniques targeting AGT manipulation such as genetic animal models, adeno-associated viral approaches, and antisense oligonucleotides made it possible to deeply investigate the relationship between AGT and cardiovascular diseases. In this brief review, we provide contemporary insights into the emerging role of AGT in cardiovascular diseases. In light of the recent progress, we emphasize some newly recognized features and mechanisms of AGT in heart failure, hypertension, atherosclerosis, and cardiovascular risk factors.


Assuntos
Angiotensinogênio/metabolismo , Doenças Cardiovasculares/metabolismo , Animais , Pressão Sanguínea/fisiologia , Humanos , Oligonucleotídeos Antissenso/metabolismo
8.
Pharmacol Res ; 167: 105409, 2021 05.
Artigo em Inglês | MEDLINE | ID: mdl-33465472

RESUMO

Sepsis, caused by the inappropriate host response to infection, is characterized by excessive inflammatory response and organ dysfunction, thus becomes a critical clinical problem. Commonly, sepsis may progress to septic shock and severe complications, including acute kidney injury (AKI), acute respiratory distress syndrome (ARDS), sepsis-induced myocardial dysfunction (SIMD), liver dysfunction, cerebral dysfunction, and skeletal muscle atrophy, which predominantly contribute to high mortality. Additionally, the global pandemic of coronavirus disease 2019 (COVID-19) raised the concern of development of effectve therapeutic strategies for viral sepsis. Renin-angiotensin system (RAS) may represent as a potent therapeutic target for sepsis therapy. The emerging role of RAS in the pathogenesis of sepsis has been investigated and several preclinical and clinical trials targeting RAS for sepsis treatment revealed promising outcomes. Herein, we attempt to review the effects and mechanisms of RAS manipulation on sepsis and its complications and provide new insights into optimizing RAS interventions for sepsis treatment.


Assuntos
Antagonistas de Receptores de Angiotensina/uso terapêutico , Inibidores da Enzima Conversora de Angiotensina/uso terapêutico , Antivirais/uso terapêutico , Tratamento Farmacológico da COVID-19 , Sistema Renina-Angiotensina/efeitos dos fármacos , SARS-CoV-2/efeitos dos fármacos , Sepse/tratamento farmacológico , Antagonistas de Receptores de Angiotensina/efeitos adversos , Inibidores da Enzima Conversora de Angiotensina/efeitos adversos , Animais , Antivirais/efeitos adversos , COVID-19/metabolismo , COVID-19/fisiopatologia , COVID-19/virologia , Interações Hospedeiro-Patógeno , Humanos , SARS-CoV-2/patogenicidade , Sepse/metabolismo , Sepse/fisiopatologia , Sepse/virologia , Resultado do Tratamento
9.
Inflamm Res ; 70(4): 379-387, 2021 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-33683374

RESUMO

INTRODUCTION: Sepsis-induced myocardial dysfunction (SIMD) is a condition manifested by an intrinsic myocardial systolic and diastolic dysfunction during sepsis, which is associated with worse clinical outcomes and a higher mortality. MATERIALS AND METHODS: Several pathophysiological mechanisms including mitochondrial dysfunction, abnormal body immune reaction, metabolic reprogramming, excessive production of reactive oxygen species (ROS), and disorder of calcium regulation have been involved in SIMD. Mitophagy has potential role in protecting myocardial cells in sepsis, especially in survivors. CONCLUSION: In the current review, we focus on the role of mitochondrial dysfunction and other mitochondria-related mechanisms including immunologic imbalance, energetic reprogramming, mitophagy, and pyroptosis in the mechanisms of SIMD.


Assuntos
Cardiomiopatias/etiologia , Mitocôndrias , Sepse/complicações , Animais , Cardiomiopatias/imunologia , Cardiomiopatias/metabolismo , Humanos , Tolerância Imunológica , Mitocôndrias/metabolismo , Mitocôndrias/ultraestrutura , Mitofagia , Miocárdio , Piroptose , Sepse/imunologia , Sepse/metabolismo
10.
BMC Infect Dis ; 21(1): 471, 2021 May 24.
Artigo em Inglês | MEDLINE | ID: mdl-34030641

RESUMO

BACKGROUND: Sepsis is a life-threatening and time-critical medical emergency; therefore, the early diagnosis of sepsis is essential to timely treatment and favorable outcomes for patients susceptible to sepsis. Eosinopenia has been identified as a potential biomarker of sepsis in the past decade. However, its clinical application progress is slow and its recognition is low. Recent studies have again focused on the potential association between Eosinopenia and severe infections. This study analyzed the efficacy of Eosinopenia as a biomarker for diagnosis of sepsis and its correlation with pathophysiology of sepsis. METHOD: The protocol for this meta-analysis is available in PROSPERO (CRD42020197664). We searched PubMed, EMBASE, Web of Science, and Cochrane Central Register of Controlled Trials CENTRAL databases to identify studies that met the inclusion criteria. Two authors performed data extraction independently. The pooled outcomes were calculated by TP (true positive), FP (false positive), FN (false negative), TN (true negative) by using bivariate meta-analysis model in STATA 14.0 software. Meanwhile, possible mechanisms of sepsis induced Eosinopenia was also analyzed. RESULTS: Seven studies were included in the present study with a total number of 3842 subjects. The incidence of Eosinopenia based on the enrolled studies varied from 23.2 to 92.7%. For diagnosis of sepsis, the pooled sensitivity, specificity, positive likelihood ratio, negative likelihood ratio and diagnostic odds ratio of Eosinopenia were 0.66 (95%CI [0.53-0.77]), 0.68 (95%CI [0.56-0.79]), 2.09 (95%CI [1.44-3.02]), 0.49 (95%CI [0.34-0.71]) and 4.23 (95%CI [2.15-8.31]), respectively. The area under the summary receiver operator characteristic curve (SROC) was 0.73 (95%CI [0.68-0.76]). Meta-regression analysis revealed that no single parameter accounted for the heterogeneity of pooled outcomes. For each subgroup of different eosinopenia cutoff values (50, 40, ≤25, 100), the sensitivity was 0.61, 0.79, 0.57, 0.54, and the specificity was 0.61, 0.75, 0.83, 0.51, respectively. CONCLUSIONS: Our findings suggested that Eosinopenia has a high incidence in sepsis but has no superiority in comparison with conventional biomarkers for diagnosis of sepsis. However, eosinopenia can still be used in clinical diagnosis for sepsis as a simple, convenient, fast and inexpensive biomarker. Therefore, further large clinical trials are still needed to re-evaluate eosinopenia as a biomarker of sepsis.


Assuntos
Agranulocitose/diagnóstico , Eosinófilos/patologia , Sepse/diagnóstico , Agranulocitose/sangue , Agranulocitose/epidemiologia , Biomarcadores/sangue , Diagnóstico Precoce , Humanos , Incidência , Razão de Chances , Sensibilidade e Especificidade , Sepse/sangue , Sepse/epidemiologia
11.
Pharmacol Res ; 159: 104887, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32526680

RESUMO

Sepsis induced myocardial dysfunction (SIMD) results in high morbidity and mortality. However, the effective therapeutic strategies for SIMD treatment remain limited. Sirt3 is the main mitochondrial Sirtuin member and is a key modulator of mitochondrial metabolism and function. In this study, we aimed to investigate the effect and mechanism of Sirt3 on SIMD. SIMD was induced by 20 mg/kg Lipopolysaccharides (LPS) injection for 6 h in mice. Sepsis could induce the reduction of cardiac Sirt3 expression and global deficiency of Sirt3 exacerbated cardiac function. Quantitative acetyl-proteomics and cardiac metabolomics analysis revealed that loss of Sirt3 led to hyper-acetylation of critical enzymes within cardiac tricarboxylic acid (TCA) cycle and generation of lactate and NADH, subsequently promotion of cardiac dysfunction after sepsis. Additionally, to evaluate whether Emodin could be utilized as a potential Sirt3 modulator to treat SIMD, male wild type mice (WT mice) or global Sirt3 deficient mice (Sirt3-/- mice) were intraperitoneally injected with 40 mg/kg Emodin for 5 days followed by 20 mg/kg LPS administration for another 6 h and observed that exogenous administration of Emodin could attenuate myocardial dysfunction in septic WT mice. However, septic Sirt3-/- mice can not gain benefit on cardiac performance from Emodin infusion. In conclusion, this study presented the protective role of Sirt3 targeting SIMD, which may provide a potential novel approach to maintain normal cardiac performance after sepsis.


Assuntos
Ciclo do Ácido Cítrico , Cardiopatias/enzimologia , Mitocôndrias Cardíacas/enzimologia , Miócitos Cardíacos/enzimologia , Sepse/enzimologia , Sirtuína 3/metabolismo , Acetilação , Animais , Ciclo do Ácido Cítrico/efeitos dos fármacos , Modelos Animais de Doenças , Emodina/farmacologia , Cardiopatias/etiologia , Cardiopatias/fisiopatologia , Cardiopatias/prevenção & controle , Lipopolissacarídeos , Masculino , Metabolômica , Camundongos Knockout , Mitocôndrias Cardíacas/efeitos dos fármacos , Mitocôndrias Cardíacas/ultraestrutura , Miócitos Cardíacos/efeitos dos fármacos , Miócitos Cardíacos/ultraestrutura , Processamento de Proteína Pós-Traducional , Sepse/induzido quimicamente , Sepse/tratamento farmacológico , Sepse/fisiopatologia , Sirtuína 3/deficiência , Sirtuína 3/genética
12.
BMC Infect Dis ; 20(1): 810, 2020 Nov 06.
Artigo em Inglês | MEDLINE | ID: mdl-33158426

RESUMO

PURPOSE: The purpose of this study was to explore the clinical features, risk factors, and outcomes of mixed Candida albicans/bacterial bloodstream infections (mixed-CA/B-BSIs) compared with monomicrobial Candida albicans bloodstream infection (mono-CA-BSI) in adult patients in China. METHODS: All hospitalized adults with Candida albicans bloodstream infection (CA-BSI) were recruited for this retrospective observational study from January 1, 2013, to December 31, 2018. RESULTS: Of the 117 patients with CA-BSI, 24 patients (20.5%) had mixed-CA/B-BSIs. The most common copathogens were coagulase-negative Staphylococcus (CNS) (24.0%), followed by Klebsiella pneumoniae (20.0%) and Staphylococcus aureus (16.0%). In the multivariable analysis, a prior ICU stay > 2 days (adjusted odds ratio [OR], 7.445; 95% confidence interval [CI], 1.152-48.132) was an independent risk factor for mixed-CA/B-BSIs. Compared with patients with mono-CA-BSI, patients with mixed-CA/B-BSIs had a prolonged length of mechanical ventilation [17.5 (4.5, 34.8) vs. 3.0 (0.0, 24.5), p = 0.019] and prolonged length of ICU stay [22.0 (14.3, 42.2) vs. 8.0 (0.0, 31.5), p = 0.010]; however, mortality was not significantly different. CONCLUSIONS: There was a high rate of mixed-CA/B-BSIs cases among CA-BSI cases, and CNS was the predominant coexisting species. A prior ICU stay > 2 days was an independent risk factor for mixed -CA/B-BSIs. Although there was no difference in mortality, the outcomes of patients with mixed -CA/B-BSIs, including prolonged length of mechanical ventilation and prolonged length of ICU stay, were worse than those with mono-CA-BSI; this deserves further attention from clinicians.


Assuntos
Bacteriemia/complicações , Candida albicans/isolamento & purificação , Candidíase/complicações , Infecções por Klebsiella/complicações , Klebsiella pneumoniae/isolamento & purificação , Infecções Estafilocócicas/complicações , Staphylococcus aureus/isolamento & purificação , Idoso , Bacteriemia/microbiologia , Bacteriemia/mortalidade , Candidíase/microbiologia , Candidíase/mortalidade , China/epidemiologia , Infecção Hospitalar/microbiologia , Feminino , Humanos , Estimativa de Kaplan-Meier , Infecções por Klebsiella/microbiologia , Infecções por Klebsiella/mortalidade , Masculino , Pessoa de Meia-Idade , Respiração Artificial/efeitos adversos , Estudos Retrospectivos , Fatores de Risco , Infecções Estafilocócicas/microbiologia , Infecções Estafilocócicas/mortalidade
13.
J Lipid Res ; 60(12): 1983-1995, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31604805

RESUMO

Nonalcoholic fatty liver disease (NAFLD) is considered as a liver manifestation of metabolic disorders. Previous studies indicate that the renin-angiotensin system (RAS) plays a complex role in NAFLD. As the only precursor of the RAS, decreased angiotensinogen (AGT) profoundly impacts RAS bioactivity. Here, we investigated the role of hepatocyte-derived AGT in liver steatosis. AGT floxed mice (hepAGT+/+) and hepatocyte-specific AGT-deficient mice (hepAGT-/-) were fed a Western diet and a normal laboratory diet for 12 weeks, respectively. Compared with hepAGT+/+ mice, Western diet-fed hepAGT-/- mice gained less body weight with improved insulin sensitivity. The attenuated severity of liver steatosis in hepAGT-/- mice was evidenced by histologic changes and reduced intrahepatic triglycerides. The abundance of SREBP1 and its downstream molecules, acetyl-CoA carboxylase and FASN, was suppressed in hepAGT-/- mice. Furthermore, serum derived from hepAGT+/+ mice stimulated hepatocyte SREBP1 expression, which could be diminished by protein kinase B (Akt)/mammalian target of rapamycin (mTOR) inhibition in vitro. Administration of losartan did not affect diet-induced body weight gain, liver steatosis severity, and hepatic p-Akt, p-mTOR, and SREBP1 protein abundance in hepAGT+/+ mice. These data suggest that attenuation of Western diet-induced liver steatosis in hepAGT-/- mice is associated with the alternation of the Akt/mTOR/SREBP-1c pathway.


Assuntos
Angiotensinogênio/metabolismo , Dieta Ocidental/efeitos adversos , Hepatócitos/efeitos dos fármacos , Hepatócitos/metabolismo , Hepatopatia Gordurosa não Alcoólica/induzido quimicamente , Hepatopatia Gordurosa não Alcoólica/metabolismo , Angiotensinogênio/deficiência , Animais , Ácidos Graxos/metabolismo , Camundongos , Hepatopatia Gordurosa não Alcoólica/patologia , Proteínas Proto-Oncogênicas c-akt/metabolismo , Sistema Renina-Angiotensina/efeitos dos fármacos , Transdução de Sinais/efeitos dos fármacos , Proteína de Ligação a Elemento Regulador de Esterol 1/metabolismo , Serina-Treonina Quinases TOR/metabolismo
14.
Heart Fail Rev ; 21(6): 723-736, 2016 11.
Artigo em Inglês | MEDLINE | ID: mdl-27221074

RESUMO

The worldwide increase trend in the prevalence of diabetes has highlighted the need for increased research efforts into treatment options for both the disease itself and its associated complications. Diabetes has been widely recognized as a major risk factor for cardiovascular diseases, such as coronary heart disease and hypertension. Diabetic cardiomyopathy (DCM) is a main complication of diabetes, contributing to specific forms of heart failure independent from ischemia or hypertension. Without considerably effective approaches, a dire need exists to further explore the mechanisms and potential therapeutic strategies to prevent or reverse the progression of DCM. In the past decades, stem cell-based therapies have held promises to various diseases including DCM. The aim of the present review was to summarize the current literature with regard to the pathological changes of diabetic cardiomyopathy, endogenous stem cells in diabetes, and the exogenous stem cells transplantation for DCM. If the best use is made of the advantages of stem cells and their mechanism of action is explicitly explored, stem cell-based therapies could served as an important tool for the prevention and treatment of DCM patients.


Assuntos
Cardiomiopatias Diabéticas/fisiopatologia , Cardiomiopatias Diabéticas/terapia , Insuficiência Cardíaca/fisiopatologia , Insuficiência Cardíaca/terapia , Transplante de Células-Tronco , Insuficiência Cardíaca/etiologia , Humanos , Resistência à Insulina , Resultado do Tratamento
15.
Anesth Analg ; 123(4): 846-58, 2016 10.
Artigo em Inglês | MEDLINE | ID: mdl-27636574

RESUMO

BACKGROUND: Many studies have compared propofol-based anesthesia with inhalational anesthesia. Results from several studies have shown improved postoperative analgesia after propofol anesthesia, but other studies showed contradictory results. There are no large prospective studies that compare postoperative pain after propofol versus inhalational anesthesia. This meta-analysis was designed to focus on this question. METHODS: A systematic literature search for randomized controlled trials that compared propofol-based anesthesia with volatile agents-based anesthesia in adults undergoing surgery was conducted. Published data were pooled for the meta-analysis with Review Manager (ie, RevMan). The main outcomes included postoperative pain intensity, opioid consumption, need for rescue analgesics, and time to first analgesia. RESULTS: Thirty-nine clinical trials with a combined subject population of 4520 patients came within the purview of this meta-analysis. The investigated volatile agents included isoflurane, sevoflurane, and desflurane. Compared with inhalational anesthetics, the propofol use was associated with a reduced postoperative pain intensity at rest at 30 minutes, 1 hour, and 12 hours (mean difference in pain scores, 30 minutes, -0.48 [visual analog scale, 0-10]; 99% confidence interval [CI], -1.07 to 0.12, P = 0.04) and reduced morphine-equivalent consumption 0 to 24 hours postoperatively (mean difference in morphine-equivalent consumption, -2.68 mg; 99% CI, -6.17 to 0.82; P = 0.05). Fewer patients required postoperative rescue analgesics during 0 to 24 hours after surgery under propofol anesthesia (risk ratio, 0.87; 99% CI, 0.74-1.03; P = 0.04). In addition, patients anesthetized with propofol required administration of postoperative analgesia later than those anesthetized with volatiles (mean difference in time to first analgesic administration, 6.12 minutes; 99% CI, 0.02-12.21; P = 0.01). Considering that Z statistic in RevMan 5.3 does not perform optimally in highly heterogeneous samples among groups or many combinations of groups with small sample sizes, a P value of <.01 was considered statistically significant. On the basis of this threshold, none of the aforementioned results are statistically significant. CONCLUSIONS: The current results are affected by substantial heterogeneity, which makes it difficult to predict significant differences in postoperative pain control between propofol anesthesia and inhalational anesthesia. Further large, randomized controlled trials are needed to corroborate these results and to detect differences (if any) between propofol and inhalational anesthesia on postoperative pain.


Assuntos
Anestésicos Inalatórios/administração & dosagem , Anestésicos Intravenosos/administração & dosagem , Medição da Dor/efeitos dos fármacos , Dor Pós-Operatória/prevenção & controle , Propofol/administração & dosagem , Humanos , Medição da Dor/métodos , Dor Pós-Operatória/diagnóstico , Ensaios Clínicos Controlados Aleatórios como Assunto/métodos
16.
Biotechnol Appl Biochem ; 62(1): 112-20, 2015.
Artigo em Inglês | MEDLINE | ID: mdl-24825752

RESUMO

The objective of the study was to explore the methods for preparing transfer factor specific to Staphylococcus aureus (SA-STF) in vitro. Under the optimum conditions, the spleen cells of rabbits were immunized with SA in vitro to prepare SA-STF, and the immune activities were identified with the phagocytosis and sterilization, skin delayed-type hypersensitivity, and immune protection tests. The concentration of polypeptide was 2.26 ± 0.27 mg/mL, and ribose was 0.684 ± 0.094 mg/mL. The phagocytosis and sterilization rates of the STF group were 70.9 ± 12.4% and 62.1 ± 12.2%, respectively, and compared with the non-specific transfer factor (NTF) group, there were no significant differences (P = 0.074 and 0.069, respectively). The skin was inflamed and marked nodules formed at the injection site in the mice of the STF group rather than the NTF and control groups. The survival rate of the STF-1 group was significantly higher than the survival rates of the STF-2 (P = 0.024) and NTF groups (P = 0.016). SA-STF was prepared and characterized successfully in vitro, and it probably is a biological candidate for therapy or adjuvant therapy for diseases caused by Staphylococcus aureus.


Assuntos
Staphylococcus aureus/imunologia , Fator de Transferência/imunologia , Animais , Fenômenos Químicos , Hipersensibilidade Tardia/imunologia , Camundongos , Fagocitose , Coelhos , Pele/imunologia , Especificidade da Espécie , Fator de Transferência/efeitos adversos , Fator de Transferência/química
17.
Heliyon ; 10(10): e31273, 2024 May 30.
Artigo em Inglês | MEDLINE | ID: mdl-38803928

RESUMO

Invention patents are of great importance to firms, and thus understanding how invention patents are achieved is becoming increasingly important in the literature. Although previous research has shown that both CEO career horizon and CEO power are important for invention patents, little attention has been paid to their potential interactive effect. Investigating their interactive effect would be both theoretically meaningful and practically valuable. Using a sample of firms listed on the A-share market of the Shanghai and Shenzhen stock exchanges from 2010 to 2022, it is found that there is an interactive effect between CEO career horizon and CEO power, and that their interaction has a negative impact on invention patents. Furthermore, the interactive effect varies across different kinds of firms. This paper contributes to the literature on upper echelons theory by highlighting the interactive effects of multiple CEO characteristics on firm innovation.

18.
Biochem Pharmacol ; 223: 116127, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38490519

RESUMO

Sepsis induced myocardial dysfunction (SIMD) is a serious complication of sepsis. There is increasing evidence that the renin-angiotensin system (RAS) is activated in SIMD. Angiotensinogen (AGT) is a precursor of the RAS, and the inhibition of AGT may have significant cardiovascular benefits. But until now, there have been no reports of small molecule drugs targeting AGT. In this study, we designed a promoter-luciferase based system to screen for novel AGT inhibitors to alleviate SIMD. As a result of high-throughput screening, a total of 5 compounds from 351 medicinal herb-derived natural compounds were found inhibiting AGT. 18ß-glycyrrhetinic acid (18ßGA) was further identified as a potent suppressor of AGT. In vitro experiments, 18ßGA could inhibit the secretion of AGT by HepG2 cells and alleviate the elevated level of mitochondrial oxidative stress in cardiomyocytes co-cultured with HepG2 supernatants. In vivo, 18ßGA prolonged the survival rate of SIMD mice, enhanced cardiac function, and inhibited the damage of mitochondrial function and inflammation. In addition, the results showed that 18ßGA may reduce AGT transcription by downregulating hepatocyte nuclear factor 4 (HNF4) and that further alleviated SIMD. In conclusion, we provided a more efficient screening strategy for AGT inhibitors and expanded the novel role of 18ßGA as a promising lead compound in rescuing cardiovascular disease associated with RAS overactivation.


Assuntos
Ácido Glicirretínico/análogos & derivados , Ensaios de Triagem em Larga Escala , Sepse , Camundongos , Animais , Lipopolissacarídeos , Angiotensinogênio/genética
19.
Front Immunol ; 15: 1382449, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38745657

RESUMO

Background: Acute Respiratory Distress Syndrome (ARDS) or its earlier stage Acute lung injury (ALI), is a worldwide health concern that jeopardizes human well-being. Currently, the treatment strategies to mitigate the incidence and mortality of ARDS are severely restricted. This limitation can be attributed, at least in part, to the substantial variations in immunity observed in individuals with this syndrome. Methods: Bulk and single cell RNA sequencing from ALI mice and single cell RNA sequencing from ARDS patients were analyzed. We utilized the Seurat program package in R and cellmarker 2.0 to cluster and annotate the data. The differential, enrichment, protein interaction, and cell-cell communication analysis were conducted. Results: The mice with ALI caused by pulmonary and extrapulmonary factors demonstrated differential expression including Clec4e, Retnlg, S100a9, Coro1a, and Lars2. We have determined that inflammatory factors have a greater significance in extrapulmonary ALI, while multiple pathways collaborate in the development of pulmonary ALI. Clustering analysis revealed significant heterogeneity in the relative abundance of immune cells in different ALI models. The autocrine action of neutrophils plays a crucial role in pulmonary ALI. Additionally, there was a significant increase in signaling intensity between B cells and M1 macrophages, NKT cells and M1 macrophages in extrapulmonary ALI. The CXCL, CSF3 and MIF, TGFß signaling pathways play a vital role in pulmonary and extrapulmonary ALI, respectively. Moreover, the analysis of human single-cell revealed DCs signaling to monocytes and neutrophils in COVID-19-associated ARDS is stronger compared to sepsis-related ARDS. In sepsis-related ARDS, CD8+ T and Th cells exhibit more prominent signaling to B-cell nucleated DCs. Meanwhile, both MIF and CXCL signaling pathways are specific to sepsis-related ARDS. Conclusion: This study has identified specific gene signatures and signaling pathways in animal models and human samples that facilitate the interaction between immune cells, which could be targeted therapeutically in ARDS patients of various etiologies.


Assuntos
Lesão Pulmonar Aguda , Comunicação Celular , Perfilação da Expressão Gênica , Animais , Lesão Pulmonar Aguda/genética , Lesão Pulmonar Aguda/imunologia , Camundongos , Humanos , Comunicação Celular/imunologia , Transcriptoma , Síndrome do Desconforto Respiratório/imunologia , Síndrome do Desconforto Respiratório/genética , Modelos Animais de Doenças , Análise de Célula Única , Camundongos Endogâmicos C57BL , Neutrófilos/imunologia , Neutrófilos/metabolismo , COVID-19/imunologia , COVID-19/genética , Transdução de Sinais , Masculino , Macrófagos/imunologia , Macrófagos/metabolismo
20.
Curr Med Sci ; 44(2): 328-332, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38517677

RESUMO

OBJECTIVE: This study aimed to investigate the incidence of enteral nutrition intolerance (ENI) in patients with sepsis and explore potential risk factors. METHODS: A case-control study was conducted in patients with sepsis who were receiving enteral nutrition (EN) at a tertiary hospital in China. The included patients were divided into the ENI group and the non-ENI group. Univariate and multivariate analyses were performed to identify the risk factors for ENI. RESULTS: A total of 859 patients were included in the study. Among them, 288 (33.53%) patients experienced symptoms of ENI, including diarrhea, vomiting, bloating, and gastric retention. Logistic regression analysis revealed that the Acute Physiology and Chronic Health Evaluation H (APACHE H) score, thoracocentesis, and usage of cardiotonic drugs (namely, inotropes) were independent predictors of the ENI. CONCLUSION: The incidence of ENI is relatively high in patients with sepsis, especially in those who have higher APACHE H scores, have undergone thoracocentesis, and have received inotropes.


Assuntos
Nutrição Enteral , Sepse , Humanos , Estudos de Casos e Controles , Estado Nutricional , Sepse/complicações , Sepse/epidemiologia , Fatores de Risco
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